CVE-2026-36948: Thesis Archiving System SQLi Vulnerability

CVE-2026-36948 Overview

Sourcecodester Online Thesis Archiving System v1.0 contains a SQL Injection vulnerability in the file /otas/view_archive.php. This vulnerability allows remote attackers to inject malicious SQL queries through unvalidated user input, potentially leading to unauthorized data access, modification, or deletion of database contents.

Critical Impact

This SQL Injection vulnerability enables unauthenticated remote attackers to manipulate database queries, potentially compromising the confidentiality, integrity, and availability of the thesis archiving system and its stored data.

Affected Products

• Sourcecodester Online Thesis Archiving System v1.0
• /otas/view_archive.php endpoint

Discovery Timeline

• 2026-04-13 - CVE-2026-36948 published to NVD
• 2026-04-14 - Last updated in NVD database

Technical Details for CVE-2026-36948

Vulnerability Analysis

This vulnerability is classified as CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), commonly known as SQL Injection. The vulnerable endpoint /otas/view_archive.php fails to properly sanitize user-supplied input before incorporating it into SQL queries. This allows attackers to manipulate the query structure by injecting malicious SQL commands.

The network-accessible attack vector with no authentication requirements makes this vulnerability particularly concerning for organizations using this thesis archiving system. An attacker can exploit this flaw without any prior privileges or user interaction, enabling direct manipulation of the underlying database.

Root Cause

The root cause lies in improper input validation and the absence of parameterized queries or prepared statements in the view_archive.php file. User input is directly concatenated into SQL query strings without proper sanitization or escaping, allowing attackers to break out of the intended query context and inject arbitrary SQL commands.

Attack Vector

The attack is conducted over the network against the vulnerable /otas/view_archive.php endpoint. An attacker can craft HTTP requests containing malicious SQL payloads within parameters processed by this file. Since no authentication is required, any remote attacker with network access to the application can exploit this vulnerability.

The SQL injection can be leveraged to:

• Extract sensitive data from the database including thesis documents and user credentials
• Modify or delete database records
• Potentially escalate to operating system command execution depending on database configuration
• Bypass authentication mechanisms if login queries are affected

For detailed technical information about the exploitation methodology, refer to the GitHub SQL Injection Report.

Detection Methods for CVE-2026-36948

Indicators of Compromise

• Unusual or malformed HTTP requests to /otas/view_archive.php containing SQL syntax characters such as single quotes, semicolons, or SQL keywords
• Database error messages appearing in web server logs indicating query syntax errors
• Unexpected database queries in database audit logs, particularly those containing UNION SELECT, OR 1=1, or other injection patterns
• Evidence of data exfiltration or unauthorized database modifications

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block common SQL injection patterns targeting the vulnerable endpoint
• Enable detailed logging on the web server and database to capture suspicious query activity
• Implement database activity monitoring to detect anomalous queries or data access patterns
• Configure intrusion detection systems (IDS) with signatures for SQL injection attack patterns

Monitoring Recommendations

• Monitor HTTP access logs for requests to /otas/view_archive.php containing suspicious characters or patterns
• Set up alerts for database errors that may indicate attempted SQL injection attacks
• Review database audit logs regularly for unauthorized data access or modifications
• Implement real-time monitoring of web application traffic for injection attack signatures

How to Mitigate CVE-2026-36948

Immediate Actions Required

• Restrict network access to the Online Thesis Archiving System to trusted IP addresses only until a patch is applied
• Deploy a Web Application Firewall with SQL injection protection rules in front of the application
• Consider temporarily disabling the vulnerable /otas/view_archive.php endpoint if functionality permits
• Audit database contents and access logs for signs of prior exploitation

Patch Information

No official vendor patch information is currently available. Organizations using Sourcecodester Online Thesis Archiving System v1.0 should monitor for security updates from the developer. In the meantime, implement the workarounds and detection strategies outlined below.

For technical details regarding this vulnerability, see the GitHub SQL Injection Report.

Workarounds

• Implement input validation and sanitization on all user-supplied parameters in view_archive.php
• Modify the application code to use prepared statements or parameterized queries instead of string concatenation
• Apply the principle of least privilege to the database account used by the web application
• Deploy network segmentation to limit exposure of the vulnerable application
• Consider replacing the affected software with an alternative solution that follows secure coding practices